import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/login.vue'
import Home from '../components/home.vue'
Vue.use(VueRouter)

const routes = [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    { path: '/Home', component: Home }
]

const router = new VueRouter({
    routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //to 将要访问的路径
    // from代表从哪个路径跳转而来
    //next是一个函数,表示放行
    // next()放行 next('/login')强制跳转

    if (to.path === '/login') return next()
        //获取token
    const tokenStr = window.sessionStorage.getItem('token')
        // 没有token强制跳转到login
    if (!tokenStr) return next('/login')
    next()
})
export default router